Pump.



No. 845,849.y PATIIIITIID MAR. 5, 1907.

F. BURNS.

PUMP. APPLICATION FILED :026.15.1902.

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FRANK BURNS, OF WESTFIELD, NEi/V YORK.

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Specification of Letters Patent.

Patented March 5, 1907.

Original application filed February 8, 1902, Serial No. 93,210. Divided and this application led December l5, 1902. Serial N0.135,300.

.To @ZZ whom, r3 may concern:

Be it known that I, FRANK BURNS, a citi- Zen of the United States, residing at Vestfield, in the county of Chautauqua and State of New York, have invented a certain new and useful Pump, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to pumps for compressing air, the object in view being to provide a portable and manually-operated airpump employing a reciprocatory piston-rod which is common to the pistons of a plurality of pump-cylinders, advantage being taken of both strokes of the piston-rod to compress air and force the same into a storage tank or reservoir, from which the air under compression is adapted to be drawn off or discharged in the desired quantity and when needed. The parts of the pump as a whole, including the pump-cylinders, storage-tank, pistons, and piston-rod, are so combined and arranged that they mutually support each other and when properly assembled constitute a practical portable double-acting manually-operated air-compressor or pump adapted for use in any connection for which devices of a similar nature are designed.

The subject-matter of this application is taken from my prior application, Serial No. 93,210, filed February 8, 1902, for vaporizers and forms a division of said application.

With the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination, and arrangement of parts, as hereinafter fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a side elevation of an air-compressor or pump constructed in accordance with the present invention. Fig. 2 is a cross-sectional view taken on the line 2 2 of Fig. 1. Fig. 3 is a detail section showing the means for coupling the piston-rod sections together.

Similar reference-numerals designate'corresponding parts in all the figures of the drawings.

In carrying out the present invention l employ a storage tank or reservoir 1, which may be of any preferred construction, but which in the preferred embodiment of this invention and as shown in Fig. 1 is in the form of an elongated hollow cylinder closed at opposite ends by the heads 2 and provided at any suitable point with an outlet or discharge pipe 3, controlled by means of a stopcock 11, tne pipe 3 being adapted to receive the end of a flexible tube or pipe 5 for conducting the air to the desired point.

1n connection with the tank or reservoir 1 I employ a plurality of pump-cylinders 6, arranged at one side and on the same side of the tank 1 and adjacent to each end thereof. Under the preferred embodiment of this invention the pump-cylinders 6 extend beyond the ends of the reservoir 1, and the outer ends of the cylinders are placed in communication with the adjacent ends of the reservoir 1 by means of tubular connections 7, which for convenience may consist of sections of tubing, flexible or otherwise, having their extremities fitted to nipples 8 and 9 on the cylinders 6 and ends oftne reservoir 1, respectively.

Lach cylinder 6 is securely fastened to the adjacent end portion of the tank or reservoir 1 by means of one or more straps 10, which extend around and embrace both the reservoir and the pump-cylinder, as shown in Figs. 1 and 2, the bands or straps being clamped or fitted about the tank and cylinder by means of bolts 11 or other equivalent fasteners. In this Way the pump-cylinders and tank or reservoir are securely fastened together and made to mutually brace and support each other.

Wheie the pump as a whole is operated in a vertical position, the lowermcst pump-cylinder 6 is provided with a foot extension 12 in the form of a loop-shaped stirrup to receive the toe or foot of the operator, the stirrup being in turn supported by a suitable base 13, which rests on the floor. The upper portion of the pump may be steadied and held by the hand not used in operating the pump, or, if desired, the pump may be fastened tc a wall or other support for the convenience of the user.

14 designates a piston-rod which connects the pistons of the two pumps illustrated in Fig. 1, the pumps being arranged in line with each other, so that both pistons may be simultaneously operated. by the piston-rod which connects them. Connected with the pistonrod 14 is a handle 15, by means of which the rod 141 may be reci procated for giving mo-v tion to the pump-pistons. By preference the piston-rod 14 is composed of two sec- IOO IIO

tions, one of which connects with the piston in one of the pump-cylinders and the other of which connects with the piston of the remaining cylinder. The adjacent ends of the piston-rod sections are connected and fastened together by means of a coupling 16 in the form of a sleeve fitting over the ends of the sections and provided with means for engaging and holding the ends of the. piston-rod sections fitting within the coupling. While the handle 15 may be applied to any part of the reciprocatory piston-rod, it has been found convenient toconnect said handle directly with the coupling 1 6 as shown in Fig. 1.

Check-valves 18 are interposed between the pumps and storage-tank and located by preference in the connections 7 to prevent the air from passing back to the pumps.

The pump or air-compressor hereinabove described is simple in construction and forms a practical manually-operated portable aircompressor. The storage-tank, pump-cylinders, and other parts of the device are so connected as to mutually support and brace each other, rendering the machine as a whole exceedingly compact, strong, and effective in operation. In one stroke of the pistonrod air is forced from one of the pump-cylinders into the adjoining end ofthe reservoir,

while at the reverse stroke air is forced from 1. A portable manually-operated pump comprising a vertically-disposed and elongated storage-tank, pump-cylinders arranged one at or near each end of the storage-tank and overlapping and fastened laterally to one side of said tank and communicating therewith, one of said cylinders forming a support for the tank and the other cylinder, an operating-rod common to the pistons of both pump-cylinders, and an operating-handle on said rod.

2. A ortable manuallyoperated pump comprising a vertically disposed and elongated storage-tank, pump-cylinders arranged one at or near each end of said tank and overlapping and fastened laterally to one side thereof and communicating therewith, a supporting-stir rup secured to the bottom of the lower pump-cylinder and forming a support for the pump as a whole, an operating-rod common to the pistons of both pump-cylinders, and an operating-handle on said rod.

3. A portable manually-operated pump comprising a vertically-disposed pump-cylinder, a supporting-stirrup therefor, a storagetank secured to one side of said pump-cylinder and extending upward above the same, a second pum p-cylinder arranged above the first pump-cylinder in line therewith and secured to the storage-tank, a sectional rod connecting the pistons of both cylinders, and an operating-handle provided with a coupling or union by which the sections of said rod are secured together for simultaneous operation.

In testimony whereof I afliX my signature in presence of two witnesses.

FRANK BURNS.

Witnesses:

HARRY F. AMER, JOHN L. FLETCHER. 

